Polymerization process with recycle line containing screen with

Details Polymerization process with recycle line containing screen with Polymerization process with recycle line containing screen with

1994-04-26

1995-08-22

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Removing and recycling removed material from an ongoing...

526 74, 5263442, C08F 1406

Patent

active

054441315

ABSTRACT:
A polymerization apparatus that is equipped with a circulation path for the flow of a reaction mixture that comprises a polymerization vessel, a heat exchanger arranged outside said polymerization vessel, and a pipeline that is extended from said polymerization vessel, is returned to said polymerization vessel through said heat exchanger, and is provided with a strainer in the course thereof, wherein the surface of a filter provided in said strainer that is located upstream has rodlike projections, and a method of producing a polymer of a monomer having an ethylenically unsaturated double bond by using said apparatus. Scale and polymers in the form of blocks can be prevented from mixing into the reaction mixture. Therefore, where the obtained sheet is molded into a sheet or the like, fish eyes can be reduced and even if the polymerization is repeated, clogging of the tubes of the heat exchanger and dropping in the flow velocity of the reaction mixture can be prevented.

REFERENCES:
patent: 5200476 (1993-04-01), Sosa et al.
patent: 5328666 (1994-07-01), Amano et al.

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